Jack for automobiles.



O. W. PARKER.

' JACK FOR AUTOMOBILES.

APPLICATION FILED AUG.8,1913.

1,107,838, Patented Aug. 18, 1914.

LEM .1 d j ATTORNEY son and able others skilled in the art to which it apsimultatxeously, in order to 'constructed according UNITED STATES .PAflENT orator.

CHARLES wnson PARKER, or Kansas CITY, MISSOURI.

To all whom it may concern:

'Be it known that I, CHARLES \Vnnson PARKER, a citizen of the United States; residing at Kansas City. in the county of Jack- State of Missouri, have invented certain new and useful Improvements in Jacks for Automobiles; and I do declare the following to be "a full, clear, and exact. description of the invention, suclnas will en-' pertains to make and use the same, reference being had to the accompanyingdrawings, ati'd"t'o the"'letters and figures reference marked thereon, which form a partot this spet'rification. i i

M particularly to a jack for bilesgflthe principal object use with automoof the invention beingto-provide a device of that characterwhereby" both of the rear or fore-wheels of be lifted from the floor facilitate cleaning or repairs, or to support the wheels above the floor in order to save the tires.

Tn accomplishing this object I have proided improved details of structure, the preferred form of which is illustrated inthe accompanyingdrawings, wherein:- Figure I is aperspective view-oi a jack to my invention. Fig. II is an end view of the jack, showing itshppliczttion to the rear axle of an automobile; Fig. III is a central, vertical sectiono'f 'ou'e of the jack stands. Fi IV is a similar View showing the parts ininctional position;

an automobile may Referring more in detail t o the parts 1 designates the stands within which the lifting members of the jack are carried, and

which are arranged in pairs and spaced in order that the lifting members may contact the rear axle of an automobile at the proper points.

2; having suflicient area to give the jack asound foundation, and are connected by brace members 3-, preferab y consisting of heavy strap metal, havip connection at the center, and provided wit gahook t, where- JACK Fort AUTmuoBILrLs,

. Specification 051 mm Patent. Application mm August 8, 191a. Serial No. 783,706.

l- I O n I -:tor -long!tudrnal ad ustment 0t invention relates to jacks, and more 'The stands are provided with bases Patented Aw. 18,1914; 1

by the jack lever may be held in upright position when not in use; the ends of the brace members being preferably provided with slots 21, through which screws :22 are projected into the stands 1 tdholdthe straps thereto by means of washers 23, thereby providing 7 the stands to adapt-them for use with different articles and under varied conditions. i Each of the stands 1 has a vertical chan- 319i send a chambcr (i at the bottom of the; x-hanncl, which extends through the bottom-6O pt the stand and has laterally openingports 7 through which the lifting bar 11 is projected, the trout edgcsmf the ports being perpem'licular to form a hearing for'tlie bar nvhen the lattcris in supporting positionfti'ta and the roarcdges thereofbeing curved to allow the bar to turn,aswill presently'be! described.-=' Slidahlymounted in the chart-- nel is a standard 8 having-a bearing plate 9 at its upper endwhich is'preferablymade separate from the standard and attached thereto by screw threads, and having ahead 10 at its lower end, WhiCliiS supported on the cross bar 1l that extends between the stands and is projected freely through-thew ports 7 therein. Zach head 10 is provided with :r'major incline 12 and minor incline l3 on'its under face, which are so arranged that-the standard isnorn' ally supported on the point 14 and so that the bar 11 willrock against the major incline 12 when the lever 15 is moved in the forward direction; in order to bring the edge of the cross-ham against the major incline and lift the standards8, and so that when the bar has passed the point 14, it will lie between the minor incline and the forward edge of the port 7 thereby locking the'standard in elevated po-' sition,' owing to the bar being held a ains't' forward movement by the forward e gelot; 90 the' poriz igand against rearward movementby the minor incline 13.

' In orderto hold the in functional position, at the front lower corner lower ed e of the bar provi e a trap 2e;

of each chamber 95.

of the chamber, so that the bar will normally lie on the shelf, but, when raised, will drop into the trap so that its lower edge is held against ackward movement.

The lever 15 has a looped part 16 which is adapted to lie over the bar 11v and grip same so that when the lever is operated the bar is rocked on its edge and actuates the lifting standards, one of the lips of the hook being provided with a set screw 17 whereby the lever may be locked to the bar if neces sary or desirable.

.In order to adapt the jack for easy place- 'ment, or for moving same over the floor of a garage, I provide each of the bases 2 with a stiif spring 18, having a ball caster 19 in its free end; the spring being sufficiently stifi to support thejack under ordinary conditions, but adapted. to yield when leverage is exerted, in order to throw the bases onto a flat floor, and provide a better. foundation for the jack. The bar 11 is provided with pins 20 which are adapted to bear against the outer faces of the stands 1 in order to limit longitudinal movement of the bar and retain same within the standards while allowing free ivotal movement thereof.

In using t e device, presuming the parts to be constructed and assembled as described, the entire device'may be moved into position beneath the rear axle of an automobile and 'the lever actuated to rock the bar 11. When the bar is rocked, its rear edge contacts the major inclines ,12 of the paired standards and lifts'same simultaneously, so that the plates 9 rise against the axle-and lift the axle and the machine. standards have been lifted sufliciently to carry the wheels of the machine off of the floor, the edge of the bar passes over the points 14 and locks between the points and the edges of the ports 7, and as it approaches its vertical position its lower edge drops into the traps 24 and is held against backward movement, so that the machine will be held firmly in elevated position until the jack is operated to lower same.

It is apparent that in order to lower the jack it is only necessary to push the lever sufliciently to pass the bar over the point 14: and then lower the parts easily by holding back onthe lever 15. When the jack is free of a load the springs 18 support the standards so that thefjack may be moved readily over the floor, although the springs will yield, as heretofore stated, inorder. that the stands may seat solidly on the floor, and provide a stable foundation. Should the an :tom'obile, or other object which it is desired to raise, have an obstruction that; will interfere with the use of the lever in its normal When the position, the lever may be removed and applied to one of the projecting ends or other part of the bar. I 3

"It is apparent that b usin a lever bar for lifting the standard should the bar or ends of the standards become worn, the bar may be moved longitudinally to bring a new,

vunworn part into position for engaging the standards. It is also apparent that should the fioornpon which the jack is placed be may be adjusted vertiuneven, either end cally, independently of the other, by turning the plate 9 on its screw threaded connection with the standard, and that the stands may be brought closer together or spaced farther apart, by sliding the slotted straps 3 on the. screws 22 bywhich they are held to the stands.

lVhile I have described the jack as adapted for use with automobiles, ll do not wish to be understood as limiting the use exclusively to that combination, as it is quite apparent that the jack may be used for any purpose to which it may be adapted.

, Having thus described my invention, what i I claim as new therein, and desire to secure by Letters Patent, is

1. A jack comprising a stand having a chambered lower end provided with side openings, at bar extended through said openings, and a standard adapted for travel in the stand and having oppositely inclined:

planes on its end adapted for operative contact-by the bar, for the purpose'set forth.

. 2. A, jack comprising spaced stands each having a supporting base and a transverse opening at its lower end. means for spacing said stands, a'barscated on said bases and adapted for adjustment within the openings in said stands, standards slidably mounted in said stands and having inclined lower ends hearing on said bar, and means for rocking the bar to raise and lower said standards.

3. In a jack, a stand comprising a chambered part having a raised shelf spaced from one edge of the chambered part to form a downset seat, a standard slidably mounted in the standard. and a bar normally supported on said shelf and adapted for pivotal movement to lift the standard and for move-- ment into and from the seat, substantially asset forth. i y

4. In a jack, :1. stand comprising a chambered part having side ports and a downset' seat, a: standard slidably mounted in the stand and having oppositely inclined faces at its lower end forming a bearing point, a bar normally supported on the shelf, and means for rocking said bar into contact with one ,of the inclinedv faces of the standard to lift the standard and for locklower end provided with oppositely inclined 10 faces adapted for lifting and locking Contact with said bur, respectively.

In testimony whereof I uil'lx my signature in preserve of two witnesses.

CHARLES WILSON PARKER. \Vitnesses ARTHUR C. BROWN, LETA E. COATS. 

